STRESS RISING AND HOLDING TIME CHARACTERISTICS OF CORROSION FATIGUE CRACK INITIATION, PROPAGATION AND FRACTURE LIFE.

Toshimitsu Yokobori, Takeo Yokobori, Tomokazu Kosumi, Noboru Chiba, Nobuo Takasu

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The corrosion fatigue crack initiation life is not affected independently by each stress rising time t//R and stress holding time t//H, but by the sum of the t//R and t//H, that is, by stress frequency, f equals 1/(2t//R plus t//H), On the other hand, the corrosion fatigue crack propagation life is influenced independently by t//R and t//H. The t//H characteristics show the transition behaviour from the cyclic dependent mechanism into the time dependent mechanism. The crack propagation life occupies major part of fracture life. The fracture life law diagram plotted by the fracture time t and fracture cycles N, as normalized stress corrosion life t(SCC), and corrosion fatigue life (cycles) N//C//F(t//H equals 0), respectively, shows approximately the same curve with respect to the parameter t//R.

Original languageEnglish
Pages (from-to)1457-1460
Number of pages4
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume51
Issue number465
Publication statusPublished - 1985 May
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint Dive into the research topics of 'STRESS RISING AND HOLDING TIME CHARACTERISTICS OF CORROSION FATIGUE CRACK INITIATION, PROPAGATION AND FRACTURE LIFE.'. Together they form a unique fingerprint.

Cite this